Improvement in saw-mills



@thath grant para' can.

HUDSON W. CONKLING, or TECUMsEH, MICHIGAN.

Letters Patent No. 93,417, dated August 10, 1869.

IMPRovEME'NT I N SAW-MILLS.

.The Schedule. referred to in these Letters Patent and making part of the same. y I

vTo whoml it ma/y concern:

Be it known that I, HUDSO W. OONKLIG, of Tecumseh, in the county of Lenawee, and State of Michigan, have invented` a new and useful Improvement in Devicesffor Changing the Rake of Muley- Saws; and I do declare thatthe following is a true and accurate description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, and being a part of this specification, in which Figure'l is a 'perspective view of an upper 4muley, with the guides thrown forward, to give the saw a raking cnt. v

Figure 2 is a side elevation of the same, with one side of the mnleybox removed, to show the mechanism employed to move the saw-guides.

' Like letters refer to like parts in each gure.

lThe nature of this invention relates to an improved method of changing the rake of reciprocating millsaws, by laterally moving the upper slides; and consists in a novel combination of the slides, guide-bars,

andcross-head, and inattaching to the slides and the muley-box a system of levers, by means of which I am enabled to move the slides while the sawis in mction,'to give it a rake proportionate tothe feed ofthe v log, as hereinafter more fully shown and set forth.

In the drawings; A

' A represents an upper muley-box of ordinary construction, in the sides of which are rigidly secured the studs B.

- O are guide-bars, on the faces of which are bolted the 4slides D, between which the cross-headd reciproeates..

The guide-bars are formed with lugs b, in which are eut slots c, embracing the studs B, permitting a lateral movement of the guide-bars and slides.

To effect this lateral movement, I employ a system of levers, whose operation is clearly shown iu iig. 2, and which I shall now describe. f

E are links, pivotcd to the upper and lower ends of the guidebars O and to the outerends of the levers F, which are pivoted in the rear sides of the muley box.

To the inner ends of the levers Fare pivoted the links G, connected to a rocker-arm, H, rigidlysecured vto a rock-shaft, I, journalled in proper bearings, J,

projecting from the rear sides of the muley-box.

v K is a hand-lever secured to the rook-shaft, by

means of which the slides are moved laterally through the system of levers just described.

The hand-lever is secured in position by a set-screw and hand-nut, projecting from its side through a slotf` ted quadrant, L, as shown, or by any other proper device.`

Any appropriate' means of producing the lateral movement of the guide-bars and slides while the saw is in motion, may be employed, instead of the system of levers herein described and shown. 4

This improvement is equally applicable to the vslides of sash and gang-saws.

A What I claim as my invention, and desire to securey 

